CN117180008A - Urine wet detection induction alarm device and detection method thereof - Google Patents

Abstract

The invention relates to a urine wet detection, in particular to a urine wet detection induction alarm device, which comprises: the detection switch comprises a first detection circuit and a second detection circuit which are oppositely arranged and are arranged on the absorption layer, wherein the first detection circuit and the second detection circuit are used for detecting urine on the absorption layer and sending out an alarm signal when a set threshold value is reached; the emitter is detachably connected with the detection switch through a wire and is used for detecting and sending out an alarm signal; and the receiver is in wireless connection with the transmitter and is used for receiving the alarm signal and sending out an alarm and/or prompt. The urine wet detection sensing alarm device provided by the invention is closely attached to the absorption layer, has high detection sensitivity and good detection accuracy, and is very convenient to use.

Description

Urine wet detection induction alarm device and detection method thereof

Technical Field

The invention relates to urine wet detection, in particular to a urine wet detection sensing alarm device and a detection method thereof.

Background

Paper diapers, diaper pads, adult care pads, infant beds, medical care articles and the like are widely used and mainly made of surface layers, coating layers, absorption layers, coating layers and the like. In order to conveniently know the liquid absorption amount, a detection alarm device is added to the product, and the infant diaper humidity detection monitoring equipment disclosed in CN 205582224U comprises a humidity sensor, a data line, a waistband upper shell, an on-chip protective shell, a button cell, an integrated chip, a chip lower protective shell, a waistband lower shell and a clothes magic tape. Because humidity transducer installs in the outside, separates the urine pad to have to detect urine, detects inaccurately through the one deck, when humidity transducer detects corresponding humidity, has caused the weeping to the easy false alarm. Meanwhile, the belt is required to be connected with the waistband, and the use is inconvenient.

Disclosure of Invention

In order to solve the problems of inaccurate detection and inconvenient use, the invention provides a urine wet detection induction alarm device, which comprises the following specific technical scheme:

a urine wetness detecting and sensing alarm device, comprising: the detection switch comprises a first detection circuit and a second detection circuit which are oppositely arranged and are arranged on the absorption layer, wherein the first detection circuit and the second detection circuit are used for detecting urine on the absorption layer and sending out an alarm signal when a set threshold value is reached; the emitter is detachably connected with the detection switch through a wire and is used for detecting and sending out an alarm signal; and the receiver is connected with the transmitter in a wireless way and is used for receiving the alarm signal and sending out an alarm and/or prompt.

Preferably, the first detection circuit is provided with a plurality of first detection grooves; a plurality of second detection grooves are formed in the second detection circuit; the first detection groove is inserted in the second detection groove and is not contacted with each other.

Preferably, the first detection circuit and the second detection circuit have the same area.

Preferably, the detection switch is further provided with a connection port, the transmitter is provided with a connection terminal, and the connection terminal is inserted into the connection port.

Preferably, the emitter is provided with a detection device, and the detection device comprises: a chip; the detection unit is respectively connected with the detection switch and the chip; and the wireless unit is connected with the chip and used for wireless communication.

Further, the detection unit includes: a port 2, the port 2 being connected to a power source; the port 1 is connected with the detection switch; a resistor R3, wherein the resistor R3 is respectively connected with the port 1 and the base electrode of the triode Q1; the resistor R1 is respectively connected with the port 1, the collector electrode of the triode Q1 and the NSJC pin of the chip; the resistor R2 is respectively connected with the resistor R3 and the emitter of the triode Q1; and the emitting electrode of the triode Q1 is grounded.

Preferably, the receiver comprises a receiving device and/or a urine detection APP, and a display screen and a buzzer are arranged on the receiving device.

A urine wet detection method is used for the urine wet detection induction alarm device, and the voltage between the first detection circuit and the second detection circuit is unchanged when no urine exists; when urine exists, the resistivity between the first detection circuit and the second detection circuit changes, whether urine exists or not is detected through circuit voltage division and measurement voltage division points, an alarm signal is sent out when the urine detection quantity reaches a set threshold value, and the receiver sends out an alarm after receiving the alarm signal.

Preferably, when the amount of urine is detected, alternating current with a set frequency is loaded between the first detection circuit and the second detection circuit, an overlapping area is formed between the urine and the first detection circuit and between the urine and the second detection circuit is different from the same plane, the urine and the first detection circuit form a capacitor C1, the urine and the second detection circuit form a capacitor C2, the capacitor C1 and the capacitor C2 are connected in series through the urine to form an equivalent capacitor C, the capacitance value of the waiting capacitor C is measured, and the amount of urine is calculated and judged according to the capacitance value.

Further, the urine amount is calculated as follows:

M＝K1×t/(R×Ln[(V1-V0)/(V1-Vt)])；

wherein:

m is the urine volume calculated by detection;

k1 is a constant;

t is the charge and discharge time of each detection;

r is the resistivity of urine;

ln is a mathematical coincidence, a logarithm based on e=2.718;

v1 is the detected voltage value;

v0 is the initial value of the voltage before detection;

vt is the voltage value at the time of the timing measurement.

Compared with the prior art, the invention has the following beneficial effects:

the urine wet detection sensing alarm device provided by the invention is closely attached to the absorption layer, has high detection sensitivity and good detection accuracy, and is very convenient to use.

Drawings

FIG. 1 is a schematic diagram of a detection switch;

FIG. 2 is a schematic diagram of the structure of an emitter;

FIG. 3 is a schematic circuit diagram of a detection device;

FIG. 4 is a schematic view for a pant diaper;

FIG. 5 is a schematic view of a pad for care;

FIG. 6 is a schematic diagram of urine detection;

FIG. 7 is an enlarged view of a portion of urine overlaying the first detection circuit and the second detection circuit;

fig. 8 is a voltage dividing circuit diagram.

Detailed Description

The invention will now be further described with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 8, a urine wetness detecting sensing alarm device includes a detecting switch 1, a transmitter 3, a receiver, a connection port 2 and a connection terminal 4. The detection switch 1 is arranged below the absorption layer, the connecting end of the detection switch 1 is connected with the detection switch 1, and the detection switch 1 is used for detecting urine; the transmitter 3 is connected with the connecting terminal 4 through a wire, the connecting terminal 4 is inserted on the connecting port 2, and the connecting terminal 4 is connected with and separated from the connecting terminal 4 in a plugging mode. The emitter 3 is used for detecting and sending out alarm signals; the receiver is connected with the transmitter 3 by wireless, and is used for receiving the alarm signal and giving an alarm and/or prompt.

Wherein, wireless connection is bluetooth connection. The connection terminal 4 and the connection port 2 are conveniently connected.

As shown in fig. 1, the detection switch 1 includes a first detection circuit 11 and a second detection circuit 12, the first detection circuit 11 and the second detection circuit 12 are both attached to an absorption layer, the second detection circuit 12 is opposite to the first detection circuit 11, and the second detection circuit 12 is conducted with the first detection circuit 11 through urine when the absorption layer is full of urine. Wherein, in order to improve the reliability and sensitivity of detection, the first detection circuit 11 is provided with three first detection grooves 111, and the second detection circuit 12 is provided with three second detection grooves 121; the first detection groove 111 is inserted in the second detection groove 121 and is not in contact with each other, so that a labyrinth structure is formed, the detection area is increased, and the detection sensitivity and reliability are improved.

The transmitter 3 is provided with a detection device, a circuit indicator lamp 33, an operating state indicator lamp 34 and a wireless connection state indicator lamp 35. The detection device comprises a detection unit and a wireless unit, wherein the chip is connected with the detection unit.

The chip is model CLM32L003KARMCortex M0+32-bit.

As shown in fig. 3, the detection unit includes a port 1, a port 2, a resistor R1, a resistor R2, a resistor R3, and a transistor Q1. The port 2 is connected with a power supply; the port 1 is connected with the detection switch 1; resistor R3 is respectively connected with the base electrode of the triode Q1 and the port 1; the resistor R1 is respectively connected with the port 1, the collector of the triode Q1 and the NSJC pin of the chip; the resistor R2 is respectively connected with the resistor R3 and the emitter of the triode Q1; the emitter of transistor Q1 is grounded.

The port 1 is connected with a power supply port of the detection circuit, and the other port is used as a signal input. When the detection switch 1 detects the generation of urine, the transmitting device receives the urine wet detection signal to wake up, and the transmitting device is connected with the pairing Bluetooth at the first time after wake up and transmits a warning instruction to the receiver.

The port 1 is used for outputting signals, the port 2 is connected with the power supply of the emitter 3, and when the detection switch 1 does not detect urine, the port 1 does not output an electric signal. When the detection switch 1 detects urine, the port 1 outputs an electrical signal. The electric signal is amplified by the triode and the amplified signal is transmitted to the No. 13 pin of the singlechip, wherein the triode is amplified when the signal exists and is in an off state when the signal does not exist.

Under the default condition of the Bluetooth module and the transmitter main control chip, the whole transmitting device is in a dormant mode under the program instruction, and the whole transmitting device is in a working mode when the transmitter main control chip is passively awakened, and when a guardian changes a diaper or a diaper implanted with the diaper detecting device, the transmitter and the Bluetooth can enter the dormant state again because the diaper alarm signal cannot be detected. When the urine wet detection device detects urine, the emission device can wake up passively again.

The wireless unit comprises a Bluetooth chip and an antenna, and the antenna is connected with the Bluetooth chip. The Bluetooth chip is GQ8851. The low-power consumption Bluetooth transmitting device is used for detecting and waking up urine, is in a dormant state under normal conditions, passively triggers and wakes up when urine is detected, and sends an alarm instruction to the receiver.

The receiver comprises a receiving device and/or a urine detection APP, and the receiving device is provided with a display screen and a buzzer. The receiving device is also provided with a wireless module, a microphone and a camera. The wireless module communicates with the wireless unit of the transmitter 3 via bluetooth. When the receiver receives the alarm signal, the buzzer is started, and the buzzer alarms.

Urine detection APP is installed on equipment such as smart mobile phone, connects through the bluetooth module of equipment own.

The detection switch 1 can be implanted or placed on a urine absorbing product and can be used with disposable diaper or diaper.

When the detection switch 1 is implanted into a paper diaper, a diaper, an adult nursing pad, an infant bed or a medical care article at one time, and when the human body is enuresis and reaches a certain absorption amount, the detection switch 1 positioned at the bottom of the absorption layer can be conducted by urine, and then the detection switch is converted into a short circuit state from an open circuit state. When urine reaches a certain amount, the urine can be timely reminded to be replaced, the usage amount of the product can be reduced, and meanwhile, the human body is prevented from being contacted with the urine for a long time.

By adopting the resistance-capacitance type integrated urine wet detection circuit, the urine wet detection device is attached to the absorption layer of the diaper or the diaper, and can send an information alarm instruction to a guardian through the wireless communication module at the first time when urine is absorbed by the absorption layer.

Can be implanted into baby skin care special diaper and diaper, toy pad for children, horizon pad, safety seat, adult nursing pad, and mattress.

The skin is not in direct contact with the skin, so that the skin injury of a human body caused by urine is practically avoided.

The emitter 3 can be used for a long time, and under normal conditions, one button cell can work for more than 2 years, and can be used as a disposable product or a reusable product.

The detection switch 1 can be implanted and placed freely, the emitter 3 is small in size, the length of the emitter is 3cm, the width of the emitter is 1.5cm, the thickness of the emitter is 0.5cm, and the emitter is light in weight.

The detection switch 1 and the emitter 3 are connected in a button type manner, so that the connection firmness of the detection switch is guaranteed, and meanwhile, the detection switch is more safe and comfortable in use, and has high detection sensitivity and strong anti-interference capability.

The wearing sense is not felt, and the sleeping feeling and sleeping quality of the human body are not influenced when the sleeping bag is used

When urine is not detected, the resistance value of the detection switch 1 is infinite and is equivalent to an open circuit state, when urine is generated, the resistance state can be changed, the resistance value is reduced along with the increase of the urine quantity, when the resistance value reaches a set value, the transmitter is awakened, and the transmitter is actively paired with Bluetooth, and when the pairing is completed, an alarm instruction is actively transmitted. When the receiver or the mobile phone APP receives the alarm instruction, the receiver or the mobile phone APP can give out sound or light alarm at the first time to prompt the guardian.

Under normal conditions, the MCU detects the high level of the NSJC port, enters a sleep mode after a period of time, when urine is generated, the NSJC port connected with the pin of the MCU is changed from the high level to the low level, the MCU is awakened and transmits a transmitting signal to the Bluetooth, the Bluetooth transmits a wireless signal to a mobile phone APP or a receiver matched with the Bluetooth after receiving the MCU signal, and the APP or the receiver gives an alarm.

The position is under the urine absorption layer of the urine isolation commodity, as long as urine appears in the water absorption layer, the urine humidity detection sensing device can wake up the transmitter 3 at the first time and send the urine humidity information to the mobile phone APP or the receiver of the guardian, so that the guardian can replace the urine isolation commodity for the guardian at the first time. The emitter 3 is outside of urine isolation commodity, through the terminal connection of leading out, guaranteed can not take place the side leakage because of destroying the appearance of urine isolation commodity, also guaranteed the sensitivity of detecting and the reusability convenience and the health and the security of emitter 3 simultaneously.

The detection speed is fast, when urine appears, the detection switch 1 is clung to the water absorption layer, so that the transmitter 3 can be awakened at the first time, and the urine wet information is sent to the mobile phone APP and the receiving device.

Example two

As shown in fig. 1 to 8, in a urine wet detection method, the voltage between the first detection circuit 11 and the second detection circuit 12 is unchanged when there is no urine; when urine exists, the resistivity between the first detection circuit 11 and the second detection circuit 12 changes, whether urine exists or not is detected through circuit voltage division and measurement voltage division points, an alarm signal is sent out when the urine detection quantity reaches a set threshold value, and the receiver receives the alarm signal and sends out an alarm.

When the urine volume is detected, alternating current with set frequency is loaded between the first detection circuit 11 and the second detection circuit 12, an overlapping area is formed between the urine and the first detection circuit 11 and the second detection circuit 12, and the urine and the first detection circuit 11 form a capacitor C1, the urine and the second detection circuit 12 form a capacitor C2, the capacitor C1 and the capacitor C2 are connected in series through the urine to form an equivalent capacitor C, the capacitance value of the waiting capacitor C is measured, and the urine volume is calculated and judged according to the capacitance value.

As shown in fig. 6 to 8, the working principle is: when no urine exists, a fixed voltage V is applied between the first detection circuit 11 and the second detection circuit 12, and the voltages of the first detection circuit 11 and the second detection circuit 12 are basically unchanged because the first detection circuit 11 and the second detection circuit 12 are not conductive (the resistance is near infinity) and are in the same plane (the distributed capacitance of the first detection circuit 11 and the second detection circuit 12 is extremely small and can be ignored in middle and low frequency); however, when urine is present on the upper surface and in contact with the first detection circuit 11 and the second detection circuit 12, since urine is not pure and has conductivity (typically, the resistance value is 300K ohms to 1.5M ohms), the resistivity between the first detection circuit 11 and the second detection circuit 12 is changed from infinity to 300K ohms to 1.5M ohms, and due to the change of the resistivity, whether urine is generated or not can be detected by the circuit voltage division and the measurement voltage division points, and the detection device is triggered. The voltage divider circuit is shown in fig. 8.

Detection of urine volume: an alternating current with a certain frequency f is added between the first detection circuit 11 and the second detection circuit 12, and as urine and the first detection circuit 11 and the second detection circuit 12 have overlapping areas and are not in the same plane, the urine and the first detection circuit 11 form a capacitor C1, the urine and the second detection circuit 12 also form a capacitor C2, the capacitor C1 and the capacitor C2 are connected in series through the urine, a new capacitor C is equivalent, and the size of the urine volume can be judged by measuring the capacitance value.

C1＝K×S1×f；

C2＝K×S2×f；

C＝(C1×C2)/(C1+C2)＝C1/2；

Wherein:

k is a constant;

s1 is the overlapping area of urine and the first detection circuit (11);

f is the frequency;

s2 is the overlapping area of the urine and the second detection circuit (12);

according to t=rc×ln [ (V1-V0)/(V1-Vt) ];

it can be seen that: c=t/(r×ln [ (V1-V0)/(V1-Vt) ]

As long as the voltage of the first detection circuit 11 and the second detection circuit 12 at the time t0 and the voltage at the time t1 are measured, the resistance of the circuit is made to be a fixed value, and the time t is fixed, and f is fixed, the series capacitance C of urine can be calculated by reversing the above formula, and since the first detection circuit 11 and the second detection circuit 12 are uniformly distributed in equal area, c1=c2 can be basically assumed, and the amount of urine can be further determined:

W×(S1+S2)；

wherein W is an area coefficient to set an alarm value.

M＝W×(S1+S2)＝W×(C1+C2)/(k×f)；

Since W, K and f are constants, a new constant K1 can be equivalent; since the first detection circuit 11 and the second detection circuit 12 are uniformly distributed in equal area, the formula is equivalent to:

M＝2×K1×C1＝K1×C＝K1×t/(R×Ln[(V1-V0)/(V1-Vt)])；

wherein: vt is the voltage value at the time of timing measurement; m is the urine volume.

K1 is a constant; t is the charge and discharge time of each detection; r is the resistivity of urine; ln is a mathematical coincidence, a logarithm based on e=2.718; v1 is the detected voltage value; v0 is the initial value of the voltage before detection.

The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will occur to those skilled in the art from consideration of the specification and practice of the invention without the need for inventive faculty, and are within the scope of the claims.

Claims (10)

1. The utility model provides a urine wet detection response alarm device which characterized in that includes:

the detection switch (1) comprises a first detection circuit (11) and a second detection circuit (12) which are oppositely arranged and are arranged on the absorption layer, wherein the first detection circuit (11) and the second detection circuit (12) are used for detecting urine on the absorption layer and sending out an alarm signal when a set threshold value is reached;

the emitter (3) is detachably connected with the detection switch (1) through a wire and is used for detecting and sending out an alarm signal; and

and the receiver is connected with the transmitter (3) in a wireless way and is used for receiving the alarm signal and sending out an alarm and/or prompt.

2. The urine wet detection induction alarm device according to claim 1, wherein the first detection circuit (11) is provided with a plurality of first detection grooves (111);

a plurality of second detection grooves (121) are formed in the second detection circuit (12);

the first detection groove (111) is inserted into the second detection groove (121) and is not in contact with each other.

3. The urine wetness detecting sensor alarm device according to claim 1, wherein said first detecting circuit (11) and said second detecting circuit (12) are equal in area.

4. The urine wet detection induction alarm device according to claim 1, wherein the detection switch (1) is further provided with a connection port (2), the transmitter (3) is provided with a connection terminal (4), and the connection terminal (4) is inserted into the connection port (2).

5. A urine wetness detecting and sensing alarm device as in claim 1, characterized in that said transmitter (3) is provided with detecting means comprising:

a chip;

the detection unit is respectively connected with the detection switch (1) and the chip;

and the wireless unit is connected with the chip and used for wireless communication.

6. The urine wetness detecting sensor alarm of claim 5, wherein the detecting unit comprises:

a port 2, the port 2 being connected to a power source;

a port 1, wherein the port 1 is connected with the detection switch (1);

a resistor R3, wherein the resistor R3 is respectively connected with the port 1 and the base electrode of the triode Q1;

the resistor R1 is respectively connected with the port 1, the collector electrode of the triode Q1 and the NSJC pin of the chip;

the resistor R2 is respectively connected with the resistor R3 and the emitter of the triode Q1;

and the emitting electrode of the triode Q1 is grounded.

7. The urine wet detection induction alarm device according to claim 1, wherein the receiver comprises a receiving device and/or a urine detection APP, and the receiving device is provided with a display screen and a buzzer.

8. A urine wet detection method for a urine wet detection sensing alarm device according to any one of claims 1 to 7, characterized in that,

the voltage between the first detection circuit (11) and the second detection circuit (12) is unchanged in the absence of urine; when urine exists, the resistivity between the first detection circuit (11) and the second detection circuit (12) changes, whether urine exists or not is detected through circuit voltage division and measurement voltage division points, an alarm signal is sent out when the urine detection quantity reaches a set threshold value, and the receiver sends out an alarm after receiving the alarm signal.

9. The urine testing method of claim 7, wherein,

when the urine volume is detected, alternating current with set frequency is loaded between the first detection circuit (11) and the second detection circuit (12), an overlapping area and a non-same plane exist between the urine and the first detection circuit (11) and the second detection circuit (12), the urine and the first detection circuit (11) form a capacitor C1, the urine and the second detection circuit (12) form a capacitor C2, the capacitor C1 and the capacitor C2 are connected in series through the urine to form an equivalent capacitor C, the capacitance value of the waiting capacitor C is measured, and the urine volume is calculated and judged according to the capacitance value.

10. The urine testing method of claim 8, wherein,

the urine volume is calculated as follows:

M＝K1×t/(R×Ln[(V1-V0)/(V1-Vt)])；

wherein: m is the urine volume calculated by detection;

k1 is a constant;

t is the charge and discharge time of each detection;

r is the resistivity of urine;

ln is a mathematical coincidence, a logarithm based on e=2.718;

v1 is the detected voltage value;

v0 is the initial value of the voltage before detection;

vt is the voltage value at the time of the timing measurement.